Film-reel.



S. KOHN..

FILM REEL.

APPLICATION FILED NOV. 14. m7.

Patented May 28,1918.

SAMUEL KOHN, OF CHICAGO, ILLINOIS.

FILM-REEL.

Specification of Letters Patent.

Patented May 28, 1918.

Application filed November 14, 1917. Serial No. 201,913.

To all whom it may concern:

Be it known that I, SAMUEL KoHN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Film-Reels, of which the following is a specification.

My invention relates to film reels, and has for its object the provision of simple and eificient means in a film reel for quickly and easily attaching and detaching the inner end of a film to be wound upon the reel.

Other objects will appear hereinafter.

An embodiment of my invention is shown in the accompanying drawing forming a part of this specification and in which- Figure l is an edge view of a film reel embodying my invention with parts of the reel broken away.

Fig. 2 is a section taken on line 22 of Fig. 1.

Fig. 3 is a view similar to Fig. 1, but showing a slight modification of my film-holding means.

Fig. 4 is a section taken on line 44 of Fig. 3.

Fig. 5 is a view similar to Figs. 1 and 3 and showing a further modification of my film-holding means; and

Figs. 6 and 7 are fragmental sections taken on lines 6-6 and 7-7 of Fig. 5.

Referring more particularly to the draw- 7 ing, I have shown a film reel of more or less conventional construction modified to accommodate my invention. In the form shown, the reel comprises two end plates 8, a hub drum 9, and a hollow hub 10'adapted to fit the spindle of a conventional moving picture machine. The-end plates 8 are secured to the parts 9 and 10 to rotate therewith. The parts 9 and 10 also hold the end plates 8 in parallel relation.

In the hub drum 9 I preferably form an opening 11, in which I mount a film clamping member. On the inside of the hub 9 I provide a spring member 12, which has its 1 1, pivoted as at 15, along its median line,

will take the position indicated by the dotted.

lines in Fig. 2, and upon pressing inwardly on the thumb part 17, the member 14 will be rocked in the opposite direction to that indicated by the dotted lines in Fig. 2. When the member 14 is rocked, as indicated by the dotted lines in Fig. 2, the end of a film, not shown, can be inserted between the edge 14 of member 14, and the edge 9' of the hub drum 9. Then upon releasing the thumb piece 16, the spring 12 will bring the member let to its normal position shown in full lines in Fig. 2 and clamp the film end securely between the free end of the spring 12 and the adjacent edge portion 9. In a like manner the film end can be clamped between the edges 9" and 14 of Fig. 2.

In Fig. 3 I have shown locking members of a slightly difl'erent form than looking member 14 of Fig. 1. In this figure there are two locking members 18 and 19, member 18 being pivoted on pintles 20, andmember 19 being pivoted on pintles 21. The hub drum 9 is provided with a spring 12, the same as the form shown in Figs. 1

and 2. It will be apparent upon reference to Fig. 4 that upon pressing the thumb pieces 22, member 18 will be moved to its dotted line position shown in Fig. 4 for the reception of a film end between the swinging edge of member 18 and edge 9 of the hub drum. Also by pressing on the thumb part 23 of Fig 3, member 19 will be moved to its dotted line position indicated in Fig. 1 for the reception of a film end between the edge 9" and the swinging edge of member 19 for clamping between such edge 9" and the free end of the spring when the thumb piece 23 is released.

In the form shown in Fig. 5 the ends 8, hub .drum 9 and spring 12 are substantially the same as shown in the previous figures. In this construction the locking member 24: is not pivotally mounted, but has its thumbengaging ends 25 mounted in slots 26 in the ends 8. The spring ends rest under the member 24 and hold it out so that the thumb pieces 25 rest against the outer edges of the slots 26, holding the member 24 even with the hub drum 9, as clearly indicated in Fig. 6. The arrangement of the form shown in Figs. 5, 6 and 7 is such that upon pressing inwardly on either of the thumb ends 25, such end will move inwardly in its slot 26 and move the shoulder portions 27 and 28 away from the edges 9 and 9 of the hub drum, permitting a film end to be inserted under either of the edges 9' and 9" of said hub drum. Upon releasing said thumb piece 25, the spring 12 will clamp such film end in its position. The member 2a is cut away along its longitudinal edges leaving the shoulder portions 27 and 28, so that when one end 25 is pressed inwardly, the film may easily be placed into position under either of the edges 9 or 9" of the hub drum.

From this arrangement then it will be ap parent that a film may be inserted in a manner to Wind a film in either direction on the film reel. This facilitates the work oi the operator in that he can put the reel in its operative position and wind the film on in the direction which the reel will be rotated. This constructionalso has the advantage of permitting the reel to be used on either right-hand or left-hand machines without changes or alterations. As clearly shown in the drawing, the periphery of the hub drum, including the member in the opening 11 thereof, is substantially cylindrical without any depressions or extensions which would tend to mar the film or cause uneven winding of the film on the reel.

it is obvious also that in each of the forms the member disposed in the opening 11 of the hub drum can be changed end for end so that in assembling the parts, the member in said opening may be more easily fitted in place. For instance, member it may be arranged with either of its ends directed toward each of the end plates 8. in the form of Fig. 3, the members 19 and 18 may be changed so that member 19 takes the place of member 18. In the form shown in Fig. 5, the member 2% can be arranged wit either of its ends toward each of plates 8. These features go to making a simple device, and one which can be manufactured at low cost.

While I have illustra ted and described the preferred form of my invention, 1 do not desire to be limited to the exact details set forth, but desire to avail myself of such variations and changes as come within the scope of the appended claims.

I claim 1. A film reel comprising end plates having radial slots therein; a cylindrical hub drum securing the end plates together and having an opening in its periphery; a member in said opening having its outer surface curved similarly to the curvature of the hub drum; extensions on the ends of said member, mounted in said slots and adapted to engage the outer ends of the latter to limit the outward movement or said member; and resilient means pressing outwardly on said member normally holding the latter with its outer surface in a cylinder with the outer surface ofthe hub drum.

2. A film reel comprising end plates having radial slots therein; a hub drum connecting the end plates together and having an opening therein; a member in said openmg; extensions on the member extending through said slots and providing thumb engaging means for use in moving said memher; and resilient means engaging said member and holding the latter in normal position with its outer surface completing a cylinder with the periphery of the hub drum.

3. A film reel comprising end plates havmg radial slots therein; a hub drum connecting the end plates together and having an opening therein; a member in said openmg pivoted at its ends to said end plates with its axis of pivotal movement substantially coincident with its median line; extensions on said member extending through said slots; and a spring engaging said memher and holding the latter in normal position.

l. A film reel comprising end plates havmg radial slots therein; a hub drum connecting the end plates together and having an opening therein; two members disposed side by side in said opening and pivoted at their ends near their adjacent longitudinal edges to the end plates; an extension on one end of each of said members extending through one of said slots; and a spring engaging said members and holding the latter in normal positions.

5. A film reel comprising end plates having radial slots therein; a hub drum connecting the end plates together and having an opening therein; a member disposed in and substantially filling said opening; an extension on each end of said member disposed in one of said slots; and a spring in said hub drum having its ends pressing outwardly on the central portion of said member holding the extensions on such member at the outer ends of said slots and the outer surface of said member substantially even outwardly on the central portion of said member holding the latter in normal position. v

7. A film reel comprising end plates; a cylindrical hub drum having an opening in its surface; a movable member in said opening normally having its outer surface completing a cylinder with'the outer surface of the hub drum; and a leaf spring mounted'in said hub drum and lying against the inner side of the latter holding said member in its normal position.

8. A film reel comprising a hub having a longitudinal opening in' its periphery; a member in said opening and movable inwardly relatively to said hub; means limiting the outward movement of said member to normally occupy a position substantially flush with the exterior of the surface of said hub; and resilient means within said hub ad'acent the opening for clamping the free en of a film extending into said hub over said member when the latter is depended against the influence of said resilient means.

9. A reel comprising end plates; a hub drum of sheet material incylindrical form securing the end plates together, there being an opening between the adjacent edges of the sheet material of the hub drum; straps cut out and struck up from the sheet material of the hub drum and extending inwardly of the latter; a member of sheet material of substantially the same thickness as the material in the hub drum in said opening; and a spring disposed around and against the inside of said hub drum with portions engaging said member normally holding the latter with its outer side completing a cylinder with the outer side of the hub drum, said straps engaging said spring holding the latter in operative position.

10. A film reel comprising end plates having radial slots therein; a hub drum of sheet material in cylindrical form securing the end plates together, there being an opening between ad] acent edges of the sheet material of the hub drum; straps cut out and struck up from the sheet material of the hub drum and extending inwardly of the latter; a member of sheet material of substantially the same thickness as the material in the hub drum in said opening and having its outer. surface curved similarly to the curvature of the periphery of the hub drum; extensions on the ends of said member disposed in said slots and adapted to engage the outer ends of the latter and hold said member against movement beyond a cylinder coincident with'the periphery of the hub drum; and a spring disposed around the inside of the hub drum and secured to the latter by being disposed under said straps with its ends engaging the under side of said member. I

In testimony whereof I have signed my name to this specification, on this twelfth day of November A. D. 1917.

SL KOHN. 

